Improvement in mechanical tools



R. H. RUSSELL. MECHANICAL TOOLS.

IN VEJVTOR Patented Dec. 14, 1875. .9

Jlttornny N P5135. PHOTO-LITMOGRAPHER, WAsNiNGToN, D. G.

. face-gage, compasses,

UNITED STATES PATENT OFFICE.

ROBERT H. RUSSELL, 0F NEWARK, NEW JERSEY.

IMPROVEMENT IN MECHANICAL TOOLS.

Specification forming part of Letters Patent N 0. 171,176, datedDecember 14, 1875; application filed December23, 1874.

To all whom it may concern: Be it known that I, ROBERT H. RUSSELL, ofthe city of Newark, in the county of Essex and State of New Jersey, haveinventedcertain new and useful Improvements in Mechanical Tools; and Ido hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it pertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

Figure l of the drawings represent a side View of my invention, showingthe different mechanical instruments or tools in a compact form. Fig. 2is a similar view of Vertical, and horizontal level and plummet; Fig. 3,an end view of Fig. 1; Fig. 4, a perspective view of the compasses, withthe marking awl or pointer inserted in the end; Fig. 5, a Similar viewof the compasses, with the marking aw] or pointer removed; Fig. 6, adetached view of the set-screw used in securing the compasses to theblade of the square; Fig. 7, a horizontal end view of the square,vertical, and horizontal level; and Fig.

8, a horizontal side view of the same.

This invention consists in the construction and combination of a numberof mechanical instruments or tools in a compact form, as will behereinafter more fully set forth.

' The following instruments or tools are comprised in the combination,viz:' A square, vertical, and horizontal level, plummet, surshears, andmarking awl or pointer, and are constructed and combined in one in thefollowing manner: The square is constructed with a broad base, A,

So that when resting upon a level surface the.

blade B will be perpendicular. Soldered or otherwise secured to theblade B, as shown, is a spirit-level, C, so that it may be used eitherhorizontally or vertically, with equal facility. The top of said bladeis. provided with suitable grooves a, from which to suspend a plummetline or cord, one side of the blade having also the requisite groove aextending from the top to the bottom, there being at the latter point'ahole in the blade where the plummet-weight is suspended.

the square,

The compasses D are soconstructed as that they may also be used asshears, the ends b extending beyond the pivoted point for this purpose,as shown. Said ends b are also provided with grooves 0 which, when thecompasses are closed, form a socket for the reception of the marking awlor pointer d, which, when inserted therein, prevents the compasses fromopening, as will be readily understood. The shanks E are so shaped asthat when the compasses are closed a slot, 0, is formed between them,which admits of a set-screw, f, for the purpose of securing thecompasses to the blade of the square, a corresponding slot, g, beingmade therein for the purpose, the two combined forming a surface-gage,which, by means of the slot and set-screw, is adjustable eithervertically or horizontally, all as shown.

The base of the square is providedwith a suitable groove, h, and theblade with a hub-v rest, 1', to admit of the square being clamped to astraight-edge when a level, longer than the square, is required to beused. The shanks E are also provided with grooves a, so that when thetool is not in use the pointer or awl (1 may be iuclosed between saidshanks, and the whole be folded together in one compact .form, as shown.

It will be observed that the com passes and marking awl or pointer areheld in adjustment by a suitable set-screw, 0.

Having thus described my invention, what,

I claim as new, and desire to secure by Letters Patent of the UnitedStates, is-

1. The compound instrument, consisting of l the plumb and square frame AB, provided with level 0, and with a groove, g, and setscrew f, holdingthe compasses imposition, substantially as described and set forth.-

2. The compasses D, provided with the ends b b, for the purpose of usingthe same as shears, said ends having grooves 00 for the reception of themarking-awl cl, substantially as shown and described.

In testimony that I claim the foregoing as my own invention I affixhereto my signature in presence of two witnesses.

Witnesses:

GEo. H. WILSON, GEO. W. FRANCIS.

ROBERT H. RUSSELL.

